A method of designing small power transformers for communication equipment

A SIMPLE METHOD is presented for the design of a power transformer which does not require any trial-and error-calculations. Optimum wire gauges for each winding to minimize losses, and optimum cores made of commercially available laminations, can be easily obtained. The method is suitable for power transformers operating at any frequency where stray capacitative and inductive effects are negligible, having one or more secondary windings, and rated up to 500 volt-amperes.